'My mother?' spluttered Roger, 'How could she do that when she is on holiday on the other side of the world?'

'I know.' Norma gulped, 'But this morning a letter addressed to you arrived. I opened it because I was curious.'
'And?'
'At the end of the letter it was written:
Dear Norma , When you have finished reading this letter, don't forget to give it to my son, Roger.'